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Categories: Quasars Radio astronomy Active galaxy types All articles with unsourced statements Articles with unsourced statements since October 2008 |
Summary Of: QuasarsQuasars were first identified as being high... Quasars show a very high... the implication of the redshift is that the quasars are very distant... the sustained energy output of quasars dwarfs every other astronomical event... The most luminous quasars radiate at a rate that can exceed the output of average... with some quasars also being strong sources of radio emission and of gamma... quasars looked like single points of light... surrounding the quasars have been identified in some cases... Most quasars cannot be seen with small telescopes... Some quasars display rapid changes in... Quasars are believed to be powered by... Because of the great distances to the furthest quasars and the finite velocity of light... Most quasars are known to be farther than three billion light... Although quasars appear faint when viewed from Earth... are visible from so far away means that quasars are the most luminous objects in the known universe... It is still substantially more luminous than nearby quasars such as 3C... Quasars were much more common in the early universe... Quasars show where massive black holes are growing rapidly... radiation and winds from quasars shut down the formation of new stars in the host galaxy... jets that produce strong radio emission in some quasars at the centers of... Quasars are found to vary in luminosity on a variety of time scales... This means that quasars generate and emit their energy from a very small region... so that the quasars were not really so distant as the Hubble law implied... and quasars are as powerful as first thought... Quasars have all the same properties as active galaxies... Quasars can be detected over the entire observable... Most quasars are brightest in their rest... A minority of quasars show strong radio emission... Since quasars exhibit properties common to all... the emissions from quasars can be readily compared to those of small active galaxies powered by... The brightest known quasars devour 1000 solar masses of material every year... and since quasars cannot continue to feed at high rates for 10 billion years... Quasars also provide some clues as to the end of the... More recent quasars show no absorption region but rather their spectra contain a spiky area known as the... One other interesting characteristic of quasars is that they show evidence of elements heavier than... The first quasars were discovered with radio telescopes in the late 1950s... quasars have strong radio emission... topic of debate during the 1960s was whether quasars were nearby objects or distant objects as implied by their... that the redshift of quasars was not due to the... Quasars also show unusual spectral emission lines which were previously only seen in hot gaseous nebulae... there were some suggestions that quasars were made of some hitherto unknown form of stable... the argument that quasars were too luminous became moot and today the cosmological distance of quasars is accepted by... unified models were developed in which quasars were classified as a particular kind of active galaxy... The huge luminosity of quasars results from the... This mechanism also explains why quasars were more common in the early universe... Four Quasars above Redshift 6 Discovered by the Canada...Encyclodia Page On: Quasars |
